Brown, George, author
Routledge, 1997
Buku Teks
Committee on the Student in Higher Education
Hazen Foundation, 1968
Buku Teks
The Committe on the Student in Higher Education, 1968
Buku Teks
Rockart, John Fralick, author
McGraw-Hill, 1975
Buku Teks
edited by Heather Fry, Steve Ketteridge and Stephanie Marshall
Routledge, 2009
Buku Referensi